Institute of Dairy Science;
College of Animal Sciences;
Zhejiang University;
Hangzhou;
310058;
China;
b MoE Key Laboratory of Molecular Animal Nutrition;
Zhejiang University;
Hangzhou;
310058;
China;
School of Biological and Chemical Engineering;
Zhejiang University of Science and Technology;
Hangzhou;
310023;
Zhejiang;
China;
Huzhou Academy of Agricultural Sciences;
Huzhou;
313000;
China;
Hunan Institute of Animal and Veterinary Science;
Changsha;
410131;
China;
Residual feed intake; Growth performance; Apparent digestibility; Nitrogen metabolism; Rumen fermentation; Sheep;